src/gallium/state_trackers/clover/core/module.cpp

   1 //
   2 // Copyright 2012 Francisco Jerez
   3 //
   4 // Permission is hereby granted, free of charge, to any person obtaining a
   5 // copy of this software and associated documentation files (the "Software"),
   6 // to deal in the Software without restriction, including without limitation
   7 // the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8 // and/or sell copies of the Software, and to permit persons to whom the
   9 // Software is furnished to do so, subject to the following conditions:
  10 //
  11 // The above copyright notice and this permission notice shall be included in
  12 // all copies or substantial portions of the Software.
  13 //
  14 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15 // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16 // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  17 // THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
  18 // WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
  19 // OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  20 // SOFTWARE.
  21 //
  22
  23 #include <type_traits>
  24 #include <algorithm>
  25
  26 #include "core/module.hpp"
  27
  28 using namespace clover;
  29
  30 namespace {
  31    template<typename T, typename = void>
  32    struct __serializer;
  33
  34    /// Serialize the specified object.
  35    template<typename T>
  36    void
  37    __proc(compat::ostream &os, const T &x) {
  38       __serializer<T>::proc(os, x);
  39    }
  40
  41    /// Deserialize the specified object.
  42    template<typename T>
  43    void
  44    __proc(compat::istream &is, T &x) {
  45       __serializer<T>::proc(is, x);
  46    }
  47
  48    template<typename T>
  49    T
  50    __proc(compat::istream &is) {
  51       T x;
  52       __serializer<T>::proc(is, x);
  53       return x;
  54    }
  55
  56    /// (De)serialize a scalar value.
  57    template<typename T>
  58    struct __serializer<T, typename std::enable_if<
  59                              std::is_scalar<T>::value>::type> {
  60       static void
  61       proc(compat::ostream &os, const T &x) {
  62          os.write(reinterpret_cast<const char *>(&x), sizeof(x));
  63       }
  64
  65       static void
  66       proc(compat::istream &is, T &x) {
  67          is.read(reinterpret_cast<char *>(&x), sizeof(x));
  68       }
  69    };
  70
  71    /// (De)serialize a vector.
  72    template<typename T>
  73    struct __serializer<compat::vector<T>> {
  74       static void
  75       proc(compat::ostream &os, const compat::vector<T> &v) {
  76          __proc<uint32_t>(os, v.size());
  77
  78          for (size_t i = 0; i < v.size(); i++)
  79             __proc<T>(os, v[i]);
  80       }
  81
  82       static void
  83       proc(compat::istream &is, compat::vector<T> &v) {
  84          v.reserve(__proc<uint32_t>(is));
  85
  86          for (size_t i = 0; i < v.size(); i++)
  87             new(&v[i]) T(__proc<T>(is));
  88       }
  89    };
  90
  91    /// (De)serialize a module::section.
  92    template<>
  93    struct __serializer<module::section> {
  94       template<typename S, typename QT>
  95       static void
  96       proc(S &s, QT &x) {
  97          __proc(s, x.type);
  98          __proc(s, x.size);
  99          __proc(s, x.data);
 100       }
 101    };
 102
 103    /// (De)serialize a module::argument.
 104    template<>
 105    struct __serializer<module::argument> {
 106       template<typename S, typename QT>
 107       static void
 108       proc(S &s, QT &x) {
 109          __proc(s, x.type);
 110          __proc(s, x.size);
 111       }
 112    };
 113
 114    /// (De)serialize a module::symbol.
 115    template<>
 116    struct __serializer<module::symbol> {
 117       template<typename S, typename QT>
 118       static void
 119       proc(S &s, QT &x) {
 120          __proc(s, x.section);
 121          __proc(s, x.offset);
 122          __proc(s, x.args);
 123       }
 124    };
 125
 126    /// (De)serialize a module.
 127    template<>
 128    struct __serializer<module> {
 129       template<typename S, typename QT>
 130       static void
 131       proc(S &s, QT &x) {
 132          __proc(s, x.syms);
 133          __proc(s, x.secs);
 134       }
 135    };
 136 };
 137
 138 namespace clover {
 139    void
 140    module::serialize(compat::ostream &os) const {
 141       __proc(os, *this);
 142    }
 143
 144    module
 145    module::deserialize(compat::istream &is) {
 146       return __proc<module>(is);
 147    }
 148
 149    const module::symbol &
 150    module::sym(compat::string name) const {
 151       auto it = std::find_if(syms.begin(), syms.end(), [&](const symbol &x) {
 152             return compat::string(x.name) == name;
 153          });
 154
 155       if (it == syms.end())
 156          throw noent_error();
 157
 158       return *it;
 159    }
 160
 161    const module::section &
 162    module::sec(typename section::type type) const {
 163       auto it = std::find_if(secs.begin(), secs.end(), [&](const section &x) {
 164             return x.type == type;
 165          });
 166
 167       if (it == secs.end())
 168          throw noent_error();
 169
 170       return *it;
 171    }
 172 }